What is html listbox?

In Hypertext Markup Language (HTML), the LISTBOX is the interactive component of the graphical user interface (GUI). It appears on the web as a field on a page that contains a vertical set of text options that the user can select. The purpose of using HTML listbox is to introduce users with a range of options from which they can choose from and then respond to the selection. There are many options to customize the document, especially using cascading leaves (CSS). There is a visual and functional difference between HTML listbox and another GUI element known as Combobox, although they are defined in almost the same way.

In the document, HTML Listbox is defined using Select. This mark triggers the document and can be used to define several options. One of the most important features of the selected brand is the name of the document, which gives the next part of the HTML document the possibility to directly access the values ​​of the Listbvůl. Another important option that can be set is multiple features that can be used by the userAllow to select multiple items from the list at the same time instead of one by one.

Between the opening and closing of selected brands, the actual elements to be contained in HTML listbox are defined using an option mark. The option mark closes the actual text that appears in HTML listbox. Like the Select brand, it also has some important features. The valuable feature of the option brand is the ability to define a return value for the selected option that is sent to the questioning script instead of the text that the user sees. This means that the user can see the word "red", but HTML Listbox can return the hexadecimal value of the red instead of the actual word.

In addition to the options, HTML Listbox can contain another visual element known as optgroup. Optgroup is a title that is used on Visubally to separate different options inside the list. When the user looks at the list box that contains Optgra brandsP, they will see a bold direction in a box under which the associated options will be slightly indented and will not be bold.

Although the functional HTML listbox can be created and placed on the web, in fact, there will be nothing to do if the user selects an option if the support code is not present. This can be done with JavaScript® by accessing the list using the document model (DOM) or can be done using other scripts or applets. As an interactive element, it generates a list of users such as Mouseover that can be captured in the browser.